<template>
    <div class="cmt-container">
        <h3>发表评论</h3>
        <hr>
        <textarea placeholder="请输入要BB的内容（做多吐槽120字）" maxlength="120" v-model="msg"></textarea>
        <mt-button type="primary" size="large" @click="postComment">发表评论</mt-button>

        <div class="cmt-list">
            <div class="cmt-item" v-for="(item, i) in comments" :key="i">
                <div class="cmt-title">
                    <span>第{{i+1}}楼</span>
                    <span>用户：{{item.user_name}}</span>
                    <span>时间：{{item.add_time | dateFormat}}</span>
                </div>
                <div class="cmt-body">{{item.content == 'undefined' ? '此用户贼鸡儿懒，连根毛都没留下' : item.content}}</div>
            </div>
        </div>
        <mt-button type="danger" size="large" plain @click="getMore">加载更多</mt-button>
    </div>
</template>

<script>
export default {
  data() {
    return {
      pageIndex: 1,
      comments: [],
      msg: ""
    };
  },
  created() {
    this.getComments();
  },
  methods: {
    getComments() {
      this.$http
        .get("api/getcomments/" + this.id + "?pageindex=" + this.pageIndex)
        .then(result => {
          if (result.body.status == 0) {
            this.comments = this.comments.concat(result.body.message);
          } else {
            Toast("获取评论失败！");
          }
        });
    },
    getMore() {
      this.pageIndex++;
      this.getComments();
    },
    postComment() {
      if (this.msg.trim().length === 0) {
        return Toast('评论内容不能为空！')
      }
      this.$http
        .post("api/postcomment/" + this.$route.params.id, {
          content: this.msg
        })
        .then(result => {
          if (result.body.status === 0) {
            this.comments.unshift({
              add_time: Date.now(),
              content: this.msg.trim(),
              user_name: "匿名用户"
            });
            this.msg ='';
          }else {
            Toast('提交评论失败！');
          }
        });
    }
  },
  props: ["id"]
};
</script>

<style lang="scss" scoped>
.cmt-container {
  h3 {
    font-size: 20px;
  }
  textarea {
    font-size: 14px;
    height: 120px;
  }
  .cmt-list {
    .cmt-item {
      font-size: 14px;
      .cmt-title {
        background-color: #ccc;
        line-height: 30px;
      }
      .cmt-body {
        line-height: 35px;
        text-indent: 2em;
      }
    }
  }
}
</style>
